The waters of the lake cover 164 square miles and are at points eighty-five feet deep. In the main this vast expanse of water, one of the largest of artificial reservoirs, containing about 183 billion cubic feet of water, is supplied by the Chagres River, though several smaller streams add to its volume. Before the dam was built two or three score yards measured the Chagres at its widest point. Now the waters are backed up into the interior far beyond the borders of the Canal Zone, along the course of every little waterway that flowed into the Chagres, and busy launches may ply above the sites of buried Indian towns. The towns themselves will not be submerged, for the cane and palm-thatched huts will float away on the rising tide. Indeed from the ships little sign of native life will appear, unless it be Indians in cayucas making their way to market. For the announced policy of the government is to depopulate the Zone. All the Indian rights to the soil have been purchased and the inhabitants remorselessly ordered to move out beyond the five-mile strip on either side of the canal. This is unfortunate as it will rob the trip of what might have been a scenic feature, for the Indians love to build their villages near the water, which is in fact their principal highway, and but for this prohibition would probably rebuild as near the sites of their obliterated towns as the waters would permit. In passing through the lake the canal describes eight angles, and the attentive traveler will find interest in watching the range lights by which the ship is guided when navigating the channel by day or by night--for there need be no cessation of passage because of darkness. These range lights are lighthouses of reënforced concrete so placed in pairs that one towers above the other at a distance back of the lower one of several hundred feet. The pilot keeping these two in line will know he is keeping to the center of his channel until the appearance of two others on either port or starboard bow warns him that the time has come to turn. The towers are of graceful design, and to come upon one springing sixty feet or more into the air from a dense jungle clustering about its very base is to have a new experience in the picturesque. They will need no resident light keepers, for most are on a general electric light circuit. Some of the more inaccessible however are stocked with compressed acetylene which will burn over six months without recharging. The whole canal indeed from its beginning miles out in the Atlantic to its end under the blue Pacific will be lighted with buoys, beacons, lighthouses and light posts along the locks until its course is almost as easily followed as a “great white way.”